Finding the Fourth Proportional to 2,599.86, 3,900.47 and 751.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.86 : 3,900.47 = 751.12 : x
2. Step 2: Convert to fraction form
   2,599.86/3,900.47 = 751.12/x
3. Step 3: Cross multiply
   2,599.86x = 3,900.47 × 751.12
4. Step 4: Simplify right side
   2,599.86x = 2,929,721.03
5. Step 5: Solve for x
   x = 2,929,721.03/2,599.86
6. Step 6: Final answer
   x = 1,126.88